日本国立先进工业科学技术研究所(AIST) Shin-ichi Yamazaki等报道了Pt/Pd/C核壳结构催化剂,通过方波电化学法改善位点本征催化活性、界面修饰三聚氰胺or四(叔丁基)四氮杂卟啉(tBuTAP),在0.9 V vs. RHE电压中在ORR电催化反应中展示了3625 A g-1-Pt超高的活性。
通过置换反应法合成的Pt/Pd/C催化剂,在0.9 V vs. RHE中的ORR本征催化活性展示了1000 A g-1-Pt的质量活性,随后,该合成方法为在80 ℃的Ar气氛中和0.1 mol dm-3 HClO4中和0.05~1.0 V区间进行方波循环活化催化剂,从而催化剂性能提高至1500 A g-1-Pt。
参考文献
Shin-ichi Yamazaki*, Masafumi Asahi, Noboru Taguchi, Tsutomu Ioroi, Yuko Kishimoto, Hideo Daimon, Minoru Inaba, Kazunori Koga, Yutaka Kurose, and Hideo Inoue, Creation of a Highly Active Pt/Pd/C Core–Shell-Structured Catalyst by Synergistic Combination of Intrinsically High Activity and Surface Decoration with Melamine or Tetra-(tert-butyl)-tetraazaporphyrin, ACS Catal. 2020
DOI: 10.1021/acscatal.0c03124
https://pubs.acs.org/doi/10.1021/acscatal.0c03124